1 /* $Id: texmapl.h,v 1.5 2004-08-28 23:17:45 schaffner Exp $ */
3 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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6 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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8 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
9 FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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11 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
12 COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
17 * Local include file for texture mapper library -- NOT to be included by users.
21 // Local include file for texture map library.
23 extern int prevmod(int val,int modulus);
24 extern int succmod(int val,int modulus);
25 extern void texture_map_flat(g3ds_tmap *t,int color);
27 extern fix compute_dx_dy(g3ds_tmap *t, int top_vertex,int bottom_vertex, fix recip_dy);
28 extern void compute_y_bounds(g3ds_tmap *t, int *vlt, int *vlb, int *vrt, int *vrb,int *bottom_y_ind);
29 extern void asm_tmap_scanline_lin_v(void);
31 extern int fx_y,fx_xleft,fx_xright,per2_flag;
32 extern unsigned char tmap_flat_color;
33 extern unsigned char *pixptr;
35 // texture mapper scanline renderers
36 extern void asm_tmap_scanline_per(void);
37 extern void asm_pent_tmap_scanline_per(void);
38 extern void asm_ppro_tmap_scanline_per(void);
39 //extern void asm_tmap_scanline_per_doubled(void);
40 extern void asm_tmap_scanline_lin(void);
41 //extern void asm_tmap_scanline_lin_16(void);
42 //extern void asm_tmap_scanline_per_16(void);
43 extern void asm_tmap_scanline_lin_lighted(void);
44 extern void asm_tmap_scanline_flat(void);
45 extern void asm_tmap_scanline_shaded(void);
46 //extern void asm_tmap_scanline_lin_lighted_k(void);
47 //extern void asm_tmap_scanline_lin_rgb(void);
48 //extern void asm_tmap_scanline_lin_rgb_16(void);
49 //extern void asm_tmap_scanline_lin_rgb_16g(void);
50 //extern void asm_tmap_scanline_lin_ld(void);
51 //extern void asm_tmap_scanline_lin_sky(void);
52 //extern void asm_tmap_scanline_lin_sky_v(void);
54 extern fix compute_dx_dy_lin(g3ds_tmap *t,int vlt,int vlb, fix recip_dy);
55 extern fix compute_dx_dy_lin(g3ds_tmap *t,int vrt,int vrb, fix recip_dy);
56 extern fix compute_du_dy_lin(g3ds_tmap *t,int vlt,int vlb, fix recip_dy);
57 extern fix compute_du_dy_lin(g3ds_tmap *t,int vrt,int vrb, fix recip_dy);
58 extern fix compute_dv_dy_lin(g3ds_tmap *t,int vlt,int vlb, fix recip_dy);
59 extern fix compute_dv_dy_lin(g3ds_tmap *t,int vrt,int vrb, fix recip_dy);
62 // Interface variables to assembler code
63 extern fix fx_u,fx_v,fx_z,fx_du_dx,fx_dv_dx,fx_dz_dx;
64 extern fix fx_dl_dx,fx_l;
65 extern int fx_r,fx_g,fx_b,fx_dr_dx,fx_dg_dx,fx_db_dx;
66 extern unsigned char *pixptr;
68 extern int bytes_per_row;
69 extern unsigned char *write_buffer;
70 extern int window_left;
71 extern int window_right;
72 extern int window_top;
73 extern int window_bottom;
74 extern int window_width;
75 extern int window_height;
76 extern int scan_doubling_flag;
77 extern int linear_if_far_flag;
78 extern int dither_intensity_lighting;
79 extern int Interlacing_on;
81 extern ubyte * tmap_flat_cthru_table;
82 extern ubyte tmap_flat_color;
83 extern ubyte tmap_flat_shade_value;
86 extern fix fix_recip[];
88 extern int prevmod(int val,int modulus);